How to determine the number of domains of a specific country TLD?

As the title says,

lets say I want to get the number of .de doma开发者_运维知识库ins:

Googling:

inurl:www.*.de 

retrieves the correct results but a lot of them are from the same domain.

Is there another way to do this?

---

the better search query would be: site:de

but even so, the result count of goolge is just a very very very blurry page estimate (a.k.a. completely wrong and not what you are looking for).

google is the wrong source for this.

but via google i found this http://www.denic.de/hintergrund/geschichte-der-denic-eg.html

August 2009 13 Millionen Domains unterhalb von .de registriert – darunter 463.000 IDNs.